OFFSET
0,3
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,1298,0,0,0,0,0,-1).
FORMULA
From Colin Barker, Jul 19 2012: (Start)
a(n) = 1298*a(n-6) - a(n-12).
G.f.: -(x^10 - x^9 + 5*x^8 - 11*x^7 + 49*x^6 - 60*x^5 - 49*x^4 - 11*x^3 - 5*x^2 - x - 1)/((x^2 - 3*x - 1)*(x^2 + 3*x - 1)*(x^4 - 3*x^3 + 10*x^2 + 3*x + 1)*(x^4 + 3*x^3 + 10*x^2 - 3*x + 1)). (End)
MATHEMATICA
Denominator[Convergents[Sqrt[117], 30]] (* Vincenzo Librandi, Oct 24 2013 *)
CROSSREFS
KEYWORD
nonn,cofr,frac,easy
AUTHOR
STATUS
approved